BExIS.Web.Shell.Controllers.TestController.createMetadataAttribute C# (CSharp) Method

        private void createMetadataAttribute()
        {
            //UnitManager um = new UnitManager();
            //Unit km = um.Create("Kilometer", "Km", "This is the Kilometer", "Length", MeasurementSystem.Metric);
            DataTypeManager dtManager = new DataTypeManager();
            DataType dt1 = dtManager.Repo.Get(p => p.Name.Equals("String")).FirstOrDefault();
            if (dt1 == null)
            {
                dt1 = dtManager.Create("String", "A test String", System.TypeCode.String);
            }

            MetadataAttributeManager maManager = new MetadataAttributeManager();

            // for unique name checks USE maManager.MetadataAttributeRepo that is searching both simple and compound attribute names
            var msa1 = maManager.MetadataAttributeRepo.Get(p => p.ShortName.Equals("Simple 1")).FirstOrDefault();
            if (msa1 == null)
            {
                msa1 = new MetadataSimpleAttribute()
                {
                    ShortName = "Simple 1",
                    DataType = dt1,
                };
                maManager.Create((MetadataSimpleAttribute)msa1);
            }
            var msa2 = maManager.MetadataAttributeRepo.Get(p => p.ShortName.Equals("Simple 2")).FirstOrDefault();
            if (msa2 == null)
            {
                msa2 = new MetadataSimpleAttribute()
                {
                    ShortName = "Simple 2",
                    DataType = dt1,
                };
                maManager.Create((MetadataSimpleAttribute)msa2);
            }

            MetadataCompoundAttribute mca1 = (MetadataCompoundAttribute)maManager.MetadataAttributeRepo.Get(p => p.ShortName.Equals("Compound 1")).FirstOrDefault();
            if (mca1 == null)
            {
                mca1 = new MetadataCompoundAttribute()
                {
                    ShortName = "Compound 1",
                    DataType = dt1,

                };
                MetadataNestedAttributeUsage u1 = new MetadataNestedAttributeUsage()
                {
                    Label = "First member",
                    Description = "I am a link between Compound 1 and Simple 1",
                    MinCardinality = 0,
                    MaxCardinality = 2,
                    Master = mca1,
                    Member = msa1,
                };
                mca1.MetadataNestedAttributeUsages.Add(u1);

                MetadataNestedAttributeUsage u2 = new MetadataNestedAttributeUsage()
                {
                    Label = "Second member",
                    Description = "I am a link between Compound 1 and Simple 2",
                    MinCardinality = 0,
                    MaxCardinality = 2,
                    Master = mca1,
                    Member = msa2,
                };
                mca1.MetadataNestedAttributeUsages.Add(u2);

                maManager.Create(mca1);
            }

            maManager.Delete(msa1);
        }